JP7270128B2 - Continuous paper folding means - Google Patents

Description

The present invention relates to a means for folding a continuous sheet or even a sheet of paper which has been brought into a seemingly continuous state by, for example, a continuous coating of a film sheet.

As a means for folding continuous paper used for form printing, etc., there is used a folding device provided with a folding portion in the paper supply portion of the device, such as the folding device described in the continuous paper processing device of Japanese Patent Application Laid-Open No. 9-67063. ing. This folds the continuous paper fed out by the U-shaped folding bar 7, the folding guide 7a and the folding claws and feeds it to the downstream processing device.

As a different mode, it is also possible to use a device such as a continuous paper folding device disclosed in Japanese Patent Application Laid-Open No. 9-12216 or a sheet folding device disclosed in Japanese Patent Application Laid-Open No. 2006-44883 to supply the sheets to downstream processing devices.

JP-A-9-67063 Japanese Patent Application Laid-Open No. 9-12216 JP-A-2006-44883

The continuous paper folding means and devices described in the above-mentioned documents raise the continuous paper from the bottom to the top and supply it to various downstream processing devices. Then, along the way, it is folded by a member necessary for folding (a folding member having concave portions and convex portions).

However, in the means and devices used for folding, during high-speed processing, the members corresponding to the protrusions of the various guides of the folding member cannot keep up with the flow of the continuous paper passing at high speed, causing tears, wrinkles, jamming, and the like. becomes. In recent years, this obstacle has become conspicuous in the production of film-type pressure-bonded postcards using pseudo-adhesive film sheets. That is, when folding the continuous sheets of paper formed by the continuous coating of the pseudo-adhesive film sheet, it is necessary to prevent folding misalignment when folding the paper that is thickened and stiffened by the pseudo-adhesive film sheet. This is because it is necessary to reduce the conveying speed to ensure folding.

In view of the above-mentioned problems, the continuous paper folding means of the present invention can accurately fold paper at high speed without misalignment , even if the paper is in a continuous state by continuously covering continuous paper or film sheets. It is an object of the present invention to provide a continuous paper folding means capable of reliably folding the continuous paper.

In order to solve the above problems, the continuous paper folding means of the present invention folds the continuous paper or continuous sheets, and folds the continuous paper or continuous paper that is sequentially supplied from an upstream process. After the sheet in the state is pulled up from the lower roller on the upstream side to the upper roller, it is pulled down from the upper roller to the lower roller on the downstream side and immediately before the lower roller on the downstream side. A creasing section is provided for pinching the spine of the folded sheet, and the continuous sheet or continuous sheets are fed to a downstream process by changing the conveying direction of the continuous sheet or the sheets in a continuous state by the lower roller on the downstream side. It is characterized by

There are no particular restrictions on the shape and material of the concave portion that constitutes the crease forming member that is provided just before the lower roller on the downstream side of the continuous paper folding means of the present invention. A pair of spheres, a cylinder having a pair of spherical tips, or a wire formed into a shape that has a crease when bent can be preferably used.

In order to reduce resistance, the pair of spheres and the pair of cylinders having spherical tips may be left free and rotated along with the flow of the passing continuous paper.

There are no particular restrictions on the shape and material of the upper rollers and the lower rollers on the upstream and downstream sides . Also, the upper roller and the downstream lower roller have an offset in their rotation axes relative to each other . That is, in the case of two-folding, the arrangement is straight, and in the case of three-folding, the arrangement is slightly angled rather than straight.

With conventional folding devices, it was necessary to create a crease, lift the paper upwards, and lift the paper a sufficient distance to flow it to downstream processing equipment before sending it downstream. That is, if the opening angle of the paper when folded is large, the resistance of the paper passing through the paper increases, causing many problems. The longer the lifted distance, the sharper the opening angle of the passing sheet at the crease portion, so that the resistance between the passing sheet and various guide members is reduced.

In the present invention, it was confirmed that the distance between the upper and lower rollers can be reduced by half compared to the above-described case of lifting by adopting a conveying path that pulls down from above. That is, if the same distance is secured for the conveying path from the bottom to the top, the sheet can be passed through the conveying path from the top to the bottom more smoothly without any trouble, and the passage speed can be increased accordingly. can.

According to the continuous paper folding means of the present invention, the continuous paper supplied from the upstream process or the continuous paper sheet covered with the film sheet is pulled up from the lower roller on the upstream side to the upper roller. After that, by pulling down from the upper roller to the lower roller on the downstream side , it can be easily folded in two or more without going against the force of gravity. Further, in the continuous paper folding means of the present invention, accidents such as misfolding, tearing, and wrinkling of paper, which tend to occur in conventional folding devices, are eliminated, and high-speed processing becomes possible.

1 is a schematic perspective view of a main part showing a configuration of a continuous sheet folding means of the present invention and a conveying path of the continuous sheet S1 when the continuous sheet S1 is folded into two by the folding means; FIG. FIG. 2 is a schematic front view of a main part of the continuous paper folding means in Embodiment 1; FIG. 4 is a schematic side view of a main part of the continuous paper folding means according to the first embodiment; FIG. 2 is a schematic perspective view of a principal portion of a crease forming portion in Example 1; FIG. 5 is a schematic front view of a main part of the folding section viewed from the direction of arrow Z in FIG. 4 ; FIG. 4 is a schematic perspective view of a main part showing a conveying path of the continuous paper S2 when the continuous paper S2 is folded into three. FIG. 10 is a schematic front view of a main part of the continuous paper folding means in Embodiment 2; FIG. 11 is a schematic side view of a main part of the continuous paper folding means in Embodiment 2; (A) is a sectional view taken along the line II in FIG. 2, and (B) is a sectional view taken along the line II-II in FIG. (A) is a plan view showing a state in which sheets S3 that are fed out continuously are continuously coated with a resin film sheet F, and (B) is a side view of (A).

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be specifically described based on the drawings.
In this embodiment, the case of using a continuous paper used in form printing etc. is described as a representative example, but a continuous sheet formed by continuous coating with a film sheet is also folded in the same manner. becomes possible. As for the material of the paper, general high-quality paper, matte paper, coated paper, synthetic paper, non-woven fabric, resin film sheet, etc. can be used.

As shown in the schematic diagram of FIG. 1, the configuration of the continuous paper folding means of the present invention includes a third roller R3 for upwardly changing the conveying path of the continuous paper S1 sequentially supplied from the upstream process; A first roller R1 arranged above the third roller R3, a second roller R2 arranged downstream and below the first roller R1 at an angle crossing the first roller R1, and slightly above the second roller R2 . A pair of spheres Q1 and Q2, a pair of guide bars B1 and B2, a pair of guide bars B1 and B2, and a pair of spheres Q1 and Q2 that play the role of sandwiching the folding line that forms the spine by folding the passing continuous sheet S1 and forming a crease on the folding line. It consists of a pair of guide blocks G1, G2, etc. attached to guide bars B1, B2 to control the flow. The sphere is fixed by a shaft to a fixed plate P1, and the fixed plate P1 is held by guide bars B1 and B2 fixed to a fixed plate P2.

The continuous paper S1 used in this embodiment is a unit composed of a first paper strip 1 and a second paper strip 2 connected in the horizontal direction by a central vertical folding line L1, as shown in FIGS. The sheets are connected in the vertical direction by the upper and lower lateral cut lines L2. Then, as shown in FIG. 3, the sheets are sequentially supplied from the right upstream process, and the conveying path is changed upward by the third roller R3. There is no particular restriction on the arrangement of the third roller R3, and it may be positioned at any position where a certain amount of tension acts on the continuous paper S1 when it passes through the upper first roller R1 . The arrangement of the third roller is the same in other embodiments.

The continuous paper S1 descending from the upper roller R1 toward the lower roller R2 is folded back by a pair of spheres Q1 and Q2 forming a crease forming section X disposed above the second lower roller R2. 4 and 5, the folding line L1 is creased so that the first sheet 1 and the second sheet 2 face each other as shown in FIG. 9(A). 1 to 3, the conveying path is controlled by the pair of guide blocks G1 and G2 between the pair of guide bars B1 and B2 as shown in FIGS. It does not matter), and is sent to further downstream processes.

In this embodiment , as shown in FIG. 4, in addition to the spheres Q1 and Q2, a sphere Q is provided in order to better control the flow of the continuous paper S1, but this sphere Q is not always necessary. Conversely, a configuration may be adopted in which the sphere Q is further added and sandwiched between two pairs of spheres. Instead of the spheres Q1 and Q2, rotating bodies of different shapes may be arranged, and a simple structure using members such as a pair of rotating or non-rotating bars may be used instead of a pair of rotating bodies. I do not care. In any case, it is sufficient if the passing continuous paper S1 can be given a crease by pinching the folding line L1, which is the spine portion of the folding. This also applies to Example 2 described below.

As shown in the schematic diagram of FIG. 6, the configuration of the continuous paper folding means of the present invention includes a third roller R13 for changing upward the conveying path of the continuous paper S2 sequentially supplied from the upstream process ; A first roller R11 arranged above the third roller R13, a second roller R12 arranged downstream at an angle vertically intersecting with the first roller R11, and a little bit of the second roller R12 . A pair of spheres Q11, Q12 and Q13, Q14, which are arranged above and play a role of sandwiching the folding line that becomes the spine by folding the passing continuous paper S2 and giving a crease to the folding line, and a pair of It consists of guide bars B11, B12 and a pair of guide blocks G11, G12 attached to the guide bars B11, B12 for controlling the flow of the continuous sheet S2. The spheres are fixed by shafts to left and right fixed plates P11 and P12, and the fixed plates P11 and P12 are held by guide bars B11 and B12 fixed to a fixed plate P13.

The continuous paper S2 used in this embodiment includes, for example, a first paper piece 11, a second paper piece 12 and a third paper piece 11, which are connected in the horizontal direction by vertical folding lines L11 and L12, as shown in FIGS. Unit sheets made up of pieces of paper 13 are connected in the vertical direction by vertical perforation lines L13 extending in the horizontal direction. Then, as shown in FIG. 8, the sheets are sequentially supplied from the right upstream process, and the conveying path is changed upward by the third roller R13.

The continuous paper S2 descending from the upper first roller R11 toward the lower second roller R12 is formed by a pair of spheres Q11, Q12 and By Q13 and Q14, the fold lines L11 and L12, which are the spines of the folds, are pinched, and the front surfaces of the first and second paper pieces 11 and 12 and the back surfaces of the second and third paper pieces 12 and 13 face each other and the cross section is formed. Both folding lines are bent to form a Z shape, and when folded into a three -fold state shown in FIG. While the conveying path is controlled by a pair of guide blocks G11 and G12, the sheet is turned in the horizontal direction (not necessarily in the horizontal direction), and sent to further downstream processes.

It should be noted that the present invention is not limited to the above embodiments.
For example, the guide blocks G1, G11, G12, which are the constituent members of the creasing portions X and Y, have fixed plates P1, P11, P12 and a pair of spheres Q1, Q2 and Q11, Q12, Q13, Q14 of extremely long lengths. It can be omitted by mounting with a short shaft. In this case, the fixed plates P1, P11 and P12 also serve as the guide blocks G1, G11 and G12.

The above embodiment describes the case of continuous paper used in form printing and rotary printing. However, as described above, even sheets in a continuous state can be folded in the same way. For example, as shown in FIGS. 10A and 10B, a resin film sheet F is continuously coated on the sheets S3 fed out at intervals or while their front and rear edges abut against each other. Then, the sheets of paper S3 that are in front and behind are made continuous by the resin film sheet F. As shown in FIG. In that case, the continuous sheets S1 and S2 used in the above-described embodiment can be folded under the same conditions.

In the above-described case, since the sheet S3 and the resin film sheet F are laminated together, the thickness of the sheet S3 and the resin film sheet F increases, making it difficult to fold. If folding means such as a folding sewing machine or folding lines are formed on the folding lines as shown in , the folding can be easily performed.

S1, S2 Continuous paper S3 Sheet paper F Resin film sheets L1, L11, L12 Vertical folding lines L2, L13 Horizontal cutting lines
R1, R11 First roller
R2, R12 Second roller
R3, R13 third roller
Q1, Q2, Q11, Q12, Q13, Q14, Q Spheres P1, P2, P11, P12, P13 Fixed plates B1, B2, B11, B12 Guide bars G1, G2, G11, G12 Guide blocks 1, 2, 11, 12 , 13 Paper pieces X, Y Folding part

Claims (1)

Folding means for folding continuous paper or sheets in a continuous state, which folds the continuous paper or sheets in a continuous state sequentially supplied from an upstream process from a lower roller on the upstream side to an upper roller. After being lifted up, the sheet is pulled down from the upper roller to the lower roller on the downstream side , and is creased by a creasing section provided just before the lower roller on the downstream side for pinching the spine of the folded sheet. 4. Continuous paper folding means, characterized in that the continuous paper or the continuous sheets are fed out to a downstream process by changing the conveying direction of the continuous paper or the continuous sheets by a lower roller on the downstream side .

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